Xenarc MDT-X7000 inputs

Hi guys, I've just bought one of these brand new for my first in-car pc setup (finally took the plunge!) Hopefully all the issues I read about will be fixed in the updated model I have purchased.

However, I was wondering if you could provide me with some details on the connections it uses. Obviously I could wait until it arrives sometime next week but ten I wouldn't be able to order the extra long cables I need to get it working straight away
I've also tried search these forums, the Flux Media forums, the product manual and the Internet in general for answers, but I can't find what I want!

So:
1. What connection is used to connect the PC audio output to the unit? Is it a 3.5m headphone jack? Also, how many are used (is it just one that will then provide audio to all 4 speakers or are there two to allow control of front and back audio independantly?)